Segment Information (Schedule Of Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013 segment		Jun. 30, 2012
Segment Reporting Information [Line Items]
Number of reportable segments					2
Percentage of revenue and income earned in one geographic segment					99.00%
Revenues	$ 273,604		$ 267,108		$ 547,508		$ 527,715
Income before income taxes	19,858		18,283		38,815		32,066
Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Revenues	183,754		183,215		371,384		364,397
Income before income taxes	17,632		17,671		36,438		35,127
Dietary Services [Member]
Segment Reporting Information [Line Items]
Revenues	89,850		83,891		176,124		163,281
Income before income taxes	5,341		4,620		10,465		8,674
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0	[1]	2	[1]	0	[1]	37	[1]
Income before income taxes	$ (3,115)	[1]	$ (4,008)	[1]	$ (8,088)	[1]	$ (11,735)	[1]

[1] Represents primarily corporate office cost and related overhead, recording of transactions at the reportable segment level which use methods other than U.S. GAAP, as well as consolidated subsidiaries’ operating expenses that are not allocated to the reportable segments, net of investment and interest income.